设定方法简单，可自订便利的拨号方式，直接打出长途电话。 可同时结合语音、传真、数据、影像做传输，使宽频的成本大幅下降。 支持 NAT (地址转换) 、其它H323协议-set method is simple, convenient set the dial-up approach and direct long distance calls. May also combine voice, fax, data, video transmission done, broadband costs dropped significantly. Support NAT (NAT), other H323 agreement